My mother has a problem with training the two dogs she did not have from puppies. She's a good trainer. What's your opinion?

My mother has a 1yr old spayed dachshund. She is well behaved but has a problem that when she is hurt or scared by something (physically, like her lastest, a spiral fracture) she will go hide and not come out when called. She will lay and look at you, thumping her tail, but has to be physically removed frm her hiding place (crate, bushes, under the truck). My mother does allow she has good recall, but only when things like horse poop or playing with the cats are not more exciting. Then it becomes a game! My mother also allows that she is not a food motivated dog, and that minimal reprimands are all it takes normally to make an impression. I told her it was a respect issue that she will need to get control of the 'game' times and the rest should come around. What is your opinion?

My mother has trained her own dogs for years, and is very successful with well-behaved, responsive dogs. She currently has two dachshunds, and three dobermans. The only dogs she has troube with are the two that she did not have from puppies. She recently got a rescue doberman that has responding issues, only when off long line or a lead. She's getting better sowly but still an issues. She has had the dachshund since about 4 months old.

Thanks so much.